/Engine/Plugins/Importers/USDImporter/Source/GeometryCacheUSD/Public/GeometryCacheUSDSceneProxy.h
Get the MeshData for a given SampleIndex
true if the MeshData was retrieved successfully
virtual bool GetMeshData ( int32 SampleIndex, [FGeometryCacheMeshData](API\Plugins\GeometryCache\FGeometryCacheMeshData) & OutMeshData )